Detailed contact information. Especially the date & time of entering the contact

[MrCrabs]

hey guys!

i have been looking for a solution for my problem for quite a long time... but nobody knows if or how i can solve it.

Here's the thing: I have met a cute girl, got her number but due to too much alcoholic beverages i cannot remember her name.
The number is somewhere in my contact list. Furthermore i have a few first names taken twice... So i would really need an app or a way to determine the date I saved the numbers.

Thanks alot!

MrCrabs